.page-home {
  --home-cut: 18px;
  --home-pad: clamp(20px, 4vw, 56px);
  background: var(--ivory);
  color: var(--black);
  font-family: var(--font-body);
}

.page-home .mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.page-home .kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-2);
}

/* ---------- hero ---------- */

.page-home .hero {
  padding: clamp(12px, 2vw, 24px) clamp(12px, 2vw, 24px) 0;
  background: var(--ivory);
}

.page-home .hero__frame {
  position: relative;
  max-width: var(--shell);
  margin: 0 auto;
  border: 1px solid rgba(53, 211, 192, 0.24);
  background:
    radial-gradient(92% 120% at 88% 0%, rgba(53, 211, 192, 0.16), transparent 62%),
    radial-gradient(70% 90% at 0% 100%, rgba(229, 169, 60, 0.1), transparent 60%),
    var(--ink);
  color: var(--ivory);
  overflow: hidden;
}

.page-home .hero__grid {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  color: rgba(53, 211, 192, 0.34);
  pointer-events: none;
}

.page-home .hero__inner {
  position: relative;
  display: grid;
  gap: clamp(26px, 4vw, 44px);
  padding: var(--home-pad);
}

.page-home .hero__index ol {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-home .hero__index a {
  display: block;
  padding: 11px 0;
  border-top: 1px solid rgba(53, 211, 192, 0.24);
  color: var(--ivory);
  text-decoration: none;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-home .hero__index li:last-child a {
  border-bottom: 1px solid rgba(53, 211, 192, 0.24);
}

.page-home .hero__index a:hover,
.page-home .hero__index a:focus-visible {
  color: var(--cyan);
  border-top-color: var(--cyan);
}

.page-home .hero__idx-no {
  display: block;
  margin-bottom: 4px;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-home .hero__idx-label {
  display: block;
  font-size: 0.875rem;
  line-height: 1.4;
}

.page-home .hero .kicker {
  color: var(--cyan);
}

.page-home .hero h1 {
  max-width: 14em;
  margin: 14px 0 20px;
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5.2vw, 4.2rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--ivory);
}

.page-home .hero__lede {
  max-width: 30em;
  margin: 0 0 26px;
  font-size: 1rem;
  line-height: 1.75;
  color: rgba(248, 246, 241, 0.8);
}

.page-home .hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-home .hero .btn--ghost {
  color: var(--ivory);
  border-color: rgba(248, 246, 241, 0.35);
  background: transparent;
}

.page-home .hero .btn--ghost:hover,
.page-home .hero .btn--ghost:focus-visible {
  color: var(--cyan);
  border-color: var(--cyan);
}

.page-home .hero__art {
  margin: 0;
  border: 1px solid rgba(53, 211, 192, 0.32);
  background: var(--ink-2);
}

.page-home .hero__art img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

@media (min-width: 900px) {
  .page-home .hero__inner {
    grid-template-columns: 108px minmax(0, 1fr) 300px;
    align-items: start;
    gap: clamp(32px, 4vw, 56px);
    min-height: 600px;
  }

  .page-home .hero__art {
    margin-top: 24px;
    margin-right: calc(var(--home-pad) * -1);
    margin-bottom: calc(var(--home-pad) * -1);
  }
}

@media (prefers-reduced-motion: no-preference) {
  .page-home .hero__body > * {
    animation: home-rise 0.62s var(--ease) both;
  }

  .page-home .hero__body > *:nth-child(2) {
    animation-delay: 0.1s;
  }

  .page-home .hero__body > *:nth-child(3) {
    animation-delay: 0.18s;
  }

  .page-home .hero__body > *:nth-child(4) {
    animation-delay: 0.26s;
  }
}

@keyframes home-rise {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- cost card + cycle ---------- */

.page-home .split {
  padding: var(--space-section) 0;
  background: var(--ivory);
}

.page-home .split__inner {
  display: grid;
  gap: clamp(28px, 4vw, 56px);
  grid-template-columns: minmax(0, 1fr);
}

.page-home .costfold {
  display: block;
}

.page-home .costfold > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 18px;
  background: var(--sand);
  border: 1px solid rgba(15, 20, 24, 0.14);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
}

.page-home .costfold > summary::-webkit-details-marker {
  display: none;
}

.page-home .costfold > summary::after {
  content: "展开";
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 400;
  color: var(--slate);
}

.page-home .costfold[open] > summary::after {
  content: "收起";
}

.page-home .costfold__body {
  padding-top: 14px;
}

.page-home .costcard {
  background: var(--sand);
  border: 1px solid rgba(15, 20, 24, 0.14);
  clip-path: polygon(0 0, calc(100% - var(--home-cut)) 0, 100% var(--home-cut), 100% 100%, 0 100%);
}

.page-home .costcard__head {
  padding: 16px 20px 14px;
  background: var(--mist);
  border-bottom: 1px solid rgba(15, 20, 24, 0.12);
}

.page-home .costcard__head h2 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-home .costcard__range {
  display: inline-block;
  padding: 3px 8px;
  background: rgba(255, 255, 255, 0.6);
  font-size: 0.72rem;
  letter-spacing: 0.02em;
  color: var(--ink-2);
}

.page-home .costcard__body {
  padding: 18px 20px 22px;
}

.page-home .costcard__lead {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--black);
}

.page-home .costcard__list {
  list-style: none;
  margin: 16px 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-home .costcard__list li {
  display: grid;
  grid-template-columns: 2em minmax(0, 1fr);
  gap: 10px;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--black);
}

.page-home .costcard__list .mono {
  padding-top: 3px;
  font-size: 0.72rem;
  color: var(--ink-2);
}

.page-home .costcard__note {
  margin: 0 0 18px;
  padding: 10px 12px;
  border-left: 2px solid var(--coral);
  background: rgba(217, 106, 78, 0.08);
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--black);
}

.page-home .costcard__cta {
  display: block;
  width: 100%;
  text-align: center;
}

@media (min-width: 900px) {
  .page-home .split__inner {
    grid-template-columns: minmax(0, 400px) minmax(0, 1fr);
    align-items: start;
  }

  .page-home .split__aside {
    position: sticky;
    top: 88px;
  }

  .page-home .costfold > summary {
    display: none;
  }

  .page-home .costfold__body {
    display: block !important;
    padding-top: 0;
  }
}

.page-home .cycle h2 {
  max-width: 16em;
  margin: 12px 0 18px;
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3.2vw, 2.5rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-home .cycle__lede {
  max-width: 34em;
  margin: 0 0 26px;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--black);
}

.page-home .cycle__fig {
  margin: 0 0 24px;
  border: 1px solid var(--line-light);
  background: var(--ivory);
}

.page-home .cycle__fig img {
  display: block;
  width: 100%;
  height: auto;
}

.page-home .cycle__versions {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 3px solid var(--ink);
}

.page-home .cycle__versions li {
  display: grid;
  grid-template-columns: 2.6em minmax(0, 1fr);
  column-gap: 12px;
  row-gap: 2px;
  padding: 14px 2px;
  border-bottom: 1px solid var(--line-light);
}

.page-home .cycle__versions .v-no {
  grid-column: 1;
  grid-row: 1;
  padding-top: 4px;
  font-size: 0.72rem;
  color: var(--ink-2);
}

.page-home .cycle__versions .v-name {
  grid-column: 2;
  grid-row: 1;
  font-size: 1rem;
  font-weight: 700;
  color: var(--ink);
}

.page-home .cycle__versions .v-note {
  grid-column: 2;
  grid-row: 2;
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--slate);
}

@media (min-width: 640px) {
  .page-home .cycle__versions li {
    grid-template-columns: 2.6em 7.5em minmax(0, 1fr);
    align-items: baseline;
  }

  .page-home .cycle__versions .v-note {
    grid-column: 3;
    grid-row: 1;
  }
}

.page-home .cycle__more {
  margin: 18px 0 0;
}

.page-home .cycle__more a {
  font-size: 0.875rem;
  color: var(--ink-2);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px solid rgba(18, 50, 76, 0.4);
}

.page-home .cycle__more a:hover,
.page-home .cycle__more a:focus-visible {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

/* ---------- section heading ---------- */

.page-home .section-head {
  max-width: 34em;
  margin-bottom: clamp(28px, 4vw, 44px);
}

.page-home .section-head h2 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3.4vw, 2.625rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--ink);
}

/* ---------- paths ---------- */

.page-home .paths {
  padding: var(--space-section) 0;
  background: var(--ink);
  color: var(--ivory);
}

.page-home .paths .kicker {
  color: var(--cyan);
}

.page-home .paths .section-head h2 {
  color: var(--ivory);
}

.page-home .paths__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-home .path {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 24px 22px;
  background: var(--ink-2);
  border: 1px solid rgba(53, 211, 192, 0.18);
  transition: border-color 0.3s var(--ease);
}

.page-home .path:hover {
  border-color: rgba(53, 211, 192, 0.55);
}

.page-home .path__no {
  margin: 0;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-home .path h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--ivory);
}

.page-home .path p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: rgba(248, 246, 241, 0.72);
}

.page-home .path__link {
  align-self: flex-start;
  margin-top: 4px;
  padding-bottom: 2px;
  font-size: 0.875rem;
  color: var(--amber);
  text-decoration: none;
  border-bottom: 1px solid rgba(229, 169, 60, 0.5);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-home .path__link:hover,
.page-home .path__link:focus-visible {
  color: var(--ivory);
  border-bottom-color: var(--ivory);
}

.page-home .path__art {
  margin: 14px -22px -24px;
  overflow: hidden;
  border-top: 1px solid rgba(53, 211, 192, 0.18);
}

.page-home .path__art img {
  display: block;
  width: 100%;
  height: 150px;
  object-fit: cover;
  opacity: 0.92;
}

@media (min-width: 780px) {
  .page-home .paths__grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 18px;
  }

  .page-home .path:nth-child(1) {
    grid-column: 1 / span 7;
  }

  .page-home .path:nth-child(2) {
    grid-column: 8 / span 5;
  }

  .page-home .path:nth-child(3) {
    grid-column: 1 / span 5;
  }

  .page-home .path:nth-child(4) {
    grid-column: 6 / span 7;
  }
}

/* ---------- batch ---------- */

.page-home .batch {
  padding: var(--space-section) 0;
  background: var(--sand);
}

.page-home .batch__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 56px);
}

.page-home .batch__art {
  margin: 0;
  border: 1px solid rgba(15, 20, 24, 0.14);
  background: var(--ivory);
}

.page-home .batch__art img {
  display: block;
  width: 100%;
  height: auto;
}

.page-home .batch__body {
  min-width: 0;
}

.page-home .batch h2 {
  margin: 12px 0 14px;
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3.4vw, 2.5rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-home .batch__lede {
  max-width: 34em;
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--black);
}

.page-home .batch__list {
  list-style: none;
  margin: 22px 0 26px;
  padding: 0;
  border-top: 1px solid rgba(15, 20, 24, 0.16);
}

.page-home .batch__list li {
  position: relative;
  padding: 16px 0 16px 18px;
  border-bottom: 1px solid rgba(15, 20, 24, 0.14);
}

.page-home .batch__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 20px;
  width: 3px;
  height: 18px;
  background: var(--amber);
}

.page-home .batch__list .chip {
  display: inline-block;
  padding: 3px 8px;
  background: var(--ink);
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  border-radius: 0;
}

.page-home .batch__list p {
  margin: 8px 0 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--black);
}

@media (min-width: 900px) {
  .page-home .batch__inner {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    align-items: start;
  }
}

/* ---------- base numbers + contact ---------- */

.page-home .base {
  padding: var(--space-section) 0;
  background: var(--ivory);
}

.page-home .base__stats {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
  margin: 0 0 clamp(36px, 5vw, 60px);
}

.page-home .base__stats > div {
  padding-top: 14px;
  border-top: 2px solid var(--amber);
}

.page-home .base__stats dt {
  font-size: clamp(1.5rem, 3vw, 2.125rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-home .base__stats dd {
  margin: 8px 0 0;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--black);
}

.page-home .base__stats dd span {
  display: block;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--slate);
}

@media (min-width: 560px) {
  .page-home .base__stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 26px;
  }
}

@media (min-width: 1000px) {
  .page-home .base__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-home .base__contact {
  display: grid;
  gap: 18px;
  padding: clamp(24px, 4vw, 40px);
  background: var(--ink);
  color: var(--ivory);
}

.page-home .base__contact-lead {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.4vw, 1.625rem);
  font-weight: 800;
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--ivory);
}

.page-home .base__contact-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-home .base__contact-list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(53, 211, 192, 0.18);
}

.page-home .contact-key {
  min-width: 5.5em;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-home .base__contact .contact-val {
  font-size: 0.9375rem;
  color: var(--ivory);
  word-break: break-word;
}

.page-home .copy-btn {
  padding: 3px 10px;
  background: transparent;
  color: var(--cyan);
  border: 1px solid rgba(53, 211, 192, 0.45);
  border-radius: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  cursor: pointer;
}

.page-home .copy-btn:hover,
.page-home .copy-btn:focus-visible {
  background: rgba(53, 211, 192, 0.14);
}

.page-home .copy-feedback {
  margin: 0;
  min-height: 1em;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--amber);
}

@media (min-width: 900px) {
  .page-home .base__contact {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.6fr);
    align-items: start;
    gap: 40px;
  }
}

/* ---------- closing ---------- */

.page-home .close {
  padding: var(--space-section) 0;
  background: var(--ink);
  color: var(--ivory);
  text-align: center;
}

.page-home .close .kicker {
  color: var(--cyan);
}

.page-home .close__inner {
  display: grid;
  justify-items: center;
  gap: 18px;
  max-width: 46em;
  margin: 0 auto;
}

.page-home .close h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.875rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--ivory);
}

.page-home .close__lede {
  max-width: 30em;
  margin: 0;
  font-size: 1rem;
  line-height: 1.75;
  color: rgba(248, 246, 241, 0.75);
}

.page-home .close__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

.page-home .close .btn--ghost {
  color: var(--ivory);
  border-color: rgba(248, 246, 241, 0.35);
  background: transparent;
}

.page-home .close .btn--ghost:hover,
.page-home .close .btn--ghost:focus-visible {
  color: var(--cyan);
  border-color: var(--cyan);
}

.page-home .close__legal {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: rgba(248, 246, 241, 0.55);
}

@media (prefers-reduced-motion: reduce) {
  .page-home .hero__body > * {
    animation: none !important;
  }

  .page-home .path,
  .page-home .path__link,
  .page-home .hero__index a {
    transition: none;
  }
}
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